navicat error 1251

navicat always reports error 1251 when connecting to MySQL8.0 and above versions; the reason is that the encryption method of MySQL8.0 version is different from that of MySQL5.0, and the connection will report an error. Below I will introduce you to the detailed solution.

Recommended tutorial: MySQL database introductory video tutorial

1. First enter mysql through the command line root account:

PS C:\Windows\system32> mysql -uroot -p

Enter the root password:

Enter password: ******
Welcome to the MySQL monitor.  Commands end with ; or \g.
Your MySQL connection id is 18
Server version: 8.0.11 MySQL Community Server - GPL
Copyright (c) 2000, 2018, Oracle and/or its affiliates. All rights reserved.
Oracle is a registered trademark of Oracle Corporation and/or its
affiliates. Other names may be trademarks of their respective
owners.
Type 'help;' or '\h' for help. Type '\c' to clear the current input statement.
mysql>

2. Change the encryption method:

mysql> ALTER USER 'root'@'localhost' IDENTIFIED BY 'password' PASSWORD EXPIRE NEVER;
Query OK, 0 rows affected (0.10 sec)

3. Change password: In this example, 123 is the new password

mysql> ALTER USER 'root'@'localhost' IDENTIFIED WITH mysql_native_password BY '123';
Query OK, 0 rows affected (0.35 sec)

4. Refresh:

mysql> FLUSH PRIVILEGES;
Query OK, 0 rows affected (0.28 sec)

// If an error is reported ERROR 1396 (HY000): Operation ALTER USER failed for 'root'@'%':

The remote access permissions are incorrect. Select the database first, check it and then change it:

mysql> use mysql;
Database changed
mysql> select user,host from user;
+------------------+-----------+
| user             | host      |
+------------------+-----------+
| mysql.infoschema | localhost |
| mysql.session    | localhost |
| mysql.sys        | localhost |
| root             | localhost |
+------------------+-----------+
5 rows in set (0.00 sec)

Finally, restart the MySQL service and reconnect. .

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